When you hear the word ‘yoga’, chances are that an image of people twisting in presumably painful poses might pop up in your head. Yes, postures or asanas are an important part of the teachings of yoga, but they are not all that there is to it. So, how well do you really know yoga? As the world gears up to celebrate the first ever-International Day of Yoga, let us try and unravel the mysteries surrounding this ancient technique.